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/* Copyright (C) 2012 The libxml++ development team
*
* This file is part of libxml++.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <libxml++/libxml++.h>
#include <iostream>
#include <stdlib.h>
void print_node(const xmlpp::Node* node, unsigned int indentation = 0)
{
const Glib::ustring indent(indentation, ' ');
const auto nodeContent = dynamic_cast<const xmlpp::ContentNode*>(node);
const auto nodeText = dynamic_cast<const xmlpp::TextNode*>(node);
const auto nodeComment = dynamic_cast<const xmlpp::CommentNode*>(node);
//Let's ignore the indenting - you don't always want to do this.
if (nodeText && nodeText->is_white_space())
return;
const auto nodename = node->get_name();
if (!nodeText && !nodeComment && !nodename.empty()) //Let's not say "name: text".
{
const auto namespace_prefix = node->get_namespace_prefix();
std::cout << indent << "Node name = ";
if (!namespace_prefix.empty())
std::cout << namespace_prefix << ":";
std::cout << nodename << std::endl;
}
else if (nodeText) //Let's say when it's text.
{
std::cout << indent << "Text Node" << std::endl;
}
//Treat the various node types differently:
if (nodeText)
{
std::cout << indent << "text = \"" << nodeText->get_content() << "\"" << std::endl;
}
else if (nodeComment)
{
std::cout << indent << "comment = " << nodeComment->get_content() << std::endl;
}
else if (nodeContent)
{
std::cout << indent << "content = " << nodeContent->get_content() << std::endl;
}
else if (const xmlpp::Element* nodeElement = dynamic_cast<const xmlpp::Element*>(node))
{
//A normal Element node:
std::cout << indent << " Element line = " << node->get_line() << std::endl;
//Print attributes:
for (const auto& attribute : nodeElement->get_attributes())
{
const auto namespace_prefix = attribute->get_namespace_prefix();
std::cout << indent << " Attribute ";
if (!namespace_prefix.empty())
std::cout << namespace_prefix << ":";
std::cout << attribute->get_name() << " = " << attribute->get_value() << std::endl;
}
const auto attribute = nodeElement->get_attribute("title");
if (attribute)
{
std::cout << indent << "title = " << attribute->get_value() << std::endl;
}
}
else if (dynamic_cast<const xmlpp::XIncludeStart*>(node))
{
std::cout << indent << " " << "XIncludeStart line = " << node->get_line() << std::endl;
}
else if (dynamic_cast<const xmlpp::XIncludeEnd*>(node))
{
std::cout << indent << " " << "XIncludeEnd" << std::endl;
}
if (!nodeContent)
{
//Recurse through child nodes:
for(const auto& child : node->get_children())
{
print_node(child, indentation + 2); //recursive
}
}
}
int main(int argc, char* argv[])
{
// Set the global C++ locale to the user-configured locale,
// so we can use std::cout with UTF-8, via Glib::ustring, without exceptions.
std::locale::global(std::locale(""));
bool validate = false;
bool set_throw_messages = false;
bool throw_messages = false;
bool substitute_entities = true;
bool generate_xinclude_nodes = true;
bool fixup_base_uris = true;
int argi = 1;
while (argc > argi && *argv[argi] == '-') // option
{
switch (*(argv[argi]+1))
{
case 'v':
validate = true;
break;
case 't':
set_throw_messages = true;
throw_messages = true;
break;
case 'e':
set_throw_messages = true;
throw_messages = false;
break;
case 'E':
substitute_entities = false;
break;
case 'X':
generate_xinclude_nodes = false;
break;
case 'B':
fixup_base_uris = false;
break;
default:
std::cout << "Usage: " << argv[0] << " [options]... [filename]" << std::endl
<< " -v Validate" << std::endl
<< " -t Throw messages in an exception" << std::endl
<< " -e Write messages to stderr" << std::endl
<< " -E Do not substitute entities" << std::endl
<< " -X Do not generate XInclude nodes" << std::endl
<< " -B Do not fix up base URIs" << std::endl;
return EXIT_FAILURE;
}
argi++;
}
std::string filepath;
if (argc > argi)
filepath = argv[argi]; //Allow the user to specify a different XML file to parse.
else
filepath = "example.xml";
try
{
xmlpp::DomParser parser;
parser.set_validate(validate);
if (set_throw_messages)
parser.set_throw_messages(throw_messages);
//We can have the text resolved/unescaped automatically.
parser.set_substitute_entities(substitute_entities);
parser.parse_file(filepath);
if (parser)
{
//Walk the tree:
auto pNode = parser.get_document()->get_root_node(); //deleted by DomParser.
print_node(pNode);
std::cout << std::endl << ">>>>> Number of XInclude substitutions: "
<< parser.get_document()->process_xinclude(
generate_xinclude_nodes, fixup_base_uris)
<< std::endl << std::endl;
std::cout << ">>>>> After XInclude processing with xmlpp::Document::process_xinclude(): "
<< std::endl << std::endl;
pNode = parser.get_document()->get_root_node();
print_node(pNode);
// xmlpp::Document::write_to_string() does not write XIncludeStart and
// XIncludeEnd nodes.
const auto whole = parser.get_document()->write_to_string();
std::cout << std::endl << whole << std::endl;
}
parser.set_xinclude_options(true, generate_xinclude_nodes, fixup_base_uris);
parser.parse_file(filepath);
if (parser)
{
std::cout << ">>>>> After XInclude processing with xmlpp::DomParser::parse_file(): "
<< std::endl << std::endl;
print_node(parser.get_document()->get_root_node());
const auto whole = parser.get_document()->write_to_string();
std::cout << std::endl << whole << std::endl;
}
}
catch (const std::exception& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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